extract a substring from clob in oracle

Question

I have a clob with data

<?xml version='1.0' encoding='UTF-8'?><root available-locales="en_US" default-locale="en_US"><static-content language-id="en_US"><![CDATA[<script type="text/javascript">
function change_case()
{
    alert("here...");
    document.form1.type.value=document.form1.type.value.toLowerCase();
}
</script>

<form name=form1 method=post action=''''>
<input type=text name=type value=''Enter USER ID'' onBlur="change_case();">
<input type=submit value=Submit> </form>
</form>]]></static-content></root>

I want to extract the line with the onblur attribute, in this case:

<input type=text name=type value=''Enter USER ID'' onblur="change_case();">

Answer 1

Tom Kyte say how get varchar2 from clob in SQL or PL/SQL code

http://asktom.oracle.com/pls/asktom/f?p=100:11:0::NO::P11_QUESTION_ID:367980988799

And when you have varchar2 you can use SUBSTR or REGEXP_SUBSTR function for extract the line.

http://docs.oracle.com/cd/B14117_01/server.101/b10759/functions147.htm#i87066

http://docs.oracle.com/cd/B14117_01/server.101/b10759/functions116.htm

If you want to use SQL code, you can create this request

select col1, col2, func1(dbms_lob.substr( t.col_clob, 4000, 1 )) from table1 t

And in PL/SQL function "func1" you can do what you want with input string using SUBSTR or any other functions